2005/03/08 by Michael C. Birse · 1 citation
Physics and Astronomy · #High-Energy Particle Collisions Research #Particle physics theoretical and experimental studies #Quantum Chromodynamics and Particle Interactions #hep-ph #nucl-th
paper · pdf · doi:10.1088/0954-3899/31/7/b01
published as J.Phys. G31 (2005) B7-B10 · 2 pages, RevTeX
arxiv created 2005/03/08 · openalex publication_date 2005/05/17 · arxiv updated 2009/12/01 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/30
The soft-pion theorem for pion production in deeply virtual Compton scattering, derived by Guichon, Mossé and Vanderhaegen, is shown to be consistent with chiral perturbation theory. Chiral symmetry requires that the nonsinglet operators corresponding to spin-independent and spin-dependent parton distributions have the same anomalous dimensions in the cases where those operators are related by chiral transformations. In chiral perturbation theory, their scale dependences can thus be absorbed in the coefficients of the corresponding effective operators, without affecting their chiral structures.